Watch casing



FIG. 1 is a front view of the watch casing showing our new design.

FIG. 2 is a back view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is left side view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a perspective view thereof. 

The ornamental design for a watch casing, as shown and described. 